/*
 * Created on 17-Jun-2004
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.pluginsimpl.local.utils.security;

import java.net.Authenticator;
import java.net.PasswordAuthentication;
import java.net.URL;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.HashMap;
import java.util.Map;

import javax.net.ssl.SSLSocketFactory;

import org.gudy.azureus2.core3.util.SHA1Hasher;
import org.gudy.azureus2.plugins.messaging.generic.GenericMessageConnection;
import org.gudy.azureus2.plugins.utils.security.CertificateListener;
import org.gudy.azureus2.plugins.utils.security.PasswordListener;
import org.gudy.azureus2.plugins.utils.security.SEPublicKey;
import org.gudy.azureus2.plugins.utils.security.SEPublicKeyLocator;
import org.gudy.azureus2.pluginsimpl.local.messaging.GenericMessageConnectionImpl;

import com.aelitis.azureus.core.AzureusCore;
/**
 * @author parg
 *
 */
import org.gudy.azureus2.core3.security.SECertificateListener;
import org.gudy.azureus2.core3.security.SEPasswordListener;
import org.gudy.azureus2.core3.security.SESecurityManager;

public class SESecurityManagerImpl implements org.gudy.azureus2.plugins.utils.security.SESecurityManager {
    private AzureusCore core;

    private Map password_listeners = new HashMap();
    private Map certificate_listeners = new HashMap();

    public SESecurityManagerImpl(AzureusCore _core) {
        core = _core;
    }

    public byte[] calculateSHA1(byte[] data_in) {
        if (data_in == null) {

            data_in = new byte[0];
        }

        SHA1Hasher hasher = new SHA1Hasher();

        return (hasher.calculateHash(data_in));
    }

    public void runWithAuthenticator(Authenticator authenticator, Runnable target) {
        try {
            Authenticator.setDefault(authenticator);

            target.run();

        } finally {

            SESecurityManager.installAuthenticator();
        }
    }

    public void addPasswordListener(final PasswordListener listener) {
        SEPasswordListener sepl = new SEPasswordListener() {
            public PasswordAuthentication getAuthentication(String realm, URL tracker) {
                return (listener.getAuthentication(realm, tracker));
            }

            public void setAuthenticationOutcome(String realm, URL tracker, boolean success) {
                listener.setAuthenticationOutcome(realm, tracker, success);
            }

            public void clearPasswords() {
            }
        };

        password_listeners.put(listener, sepl);

        SESecurityManager.addPasswordListener(sepl);
    }

    public void removePasswordListener(PasswordListener listener) {
        SEPasswordListener sepl = (SEPasswordListener) password_listeners.get(listener);

        if (sepl != null) {

            SESecurityManager.removePasswordListener(sepl);
        }
    }

    public void addCertificateListener(final CertificateListener listener) {
        SECertificateListener sepl = new SECertificateListener() {
            public boolean trustCertificate(String resource, X509Certificate cert) {
                return (listener.trustCertificate(resource, cert));
            }
        };

        certificate_listeners.put(listener, sepl);

        SESecurityManager.addCertificateListener(sepl);
    }

    public void removeCertificateListener(CertificateListener listener) {
        SECertificateListener sepl = (SECertificateListener) certificate_listeners.get(listener);

        if (sepl != null) {

            SESecurityManager.removeCertificateListener(sepl);
        }
    }

    public SSLSocketFactory installServerCertificate(URL url) {
        return (SESecurityManager.installServerCertificates(url));
    }

    public KeyStore getKeyStore()

    throws Exception {
        return (SESecurityManager.getKeyStore());
    }

    public KeyStore getTrustStore()

    throws Exception {
        return (SESecurityManager.getTrustStore());
    }

    public Certificate createSelfSignedCertificate(String alias, String cert_dn, int strength)

    throws Exception {
        return (SESecurityManager.createSelfSignedCertificate(alias, cert_dn, strength));
    }

    public byte[] getIdentity() {
        return (core.getCryptoManager().getSecureID());
    }

    public SEPublicKey getPublicKey(int key_type, String reason_resource)

    throws Exception {
        byte[] encoded = core.getCryptoManager().getECCHandler().getPublicKey(reason_resource);

        return (new SEPublicKeyImpl(key_type, encoded));
    }

    public SEPublicKey decodePublicKey(byte[] encoded) {
        return (SEPublicKeyImpl.decode(encoded));
    }

    public GenericMessageConnection getSTSConnection(GenericMessageConnection connection, SEPublicKey my_public_key,
            SEPublicKeyLocator key_locator, String reason_resource, int block_crypto)

    throws Exception {
        return (new SESTSConnectionImpl(core, (GenericMessageConnectionImpl) connection, my_public_key, key_locator, reason_resource, block_crypto));
    }
}
